pic: 2011 Drive Prototype

Looks like a nice design. A prototype is a functioning physical mockup or first run mechanism. For reference:

Prototype -noun The original or model on which something is based or formed.

Design -noun An outline, sketch, or plan, as of the form and structure of a work of art, an edifice, or a machine to be executed or constructed.

I quite like your modeling work, keep practicing! My suggestions for the design:
-You probably don't need the superstructure.
-Have you taken into account materials? Depending on what thicknesses and alloys you're planning on using, you might be able to save some weight here and there.
-How thick is your belly pan? It seems rather thick. You should be able to go pretty thin, ie .090 or .040 while still maintaining plenty of strength if you're securing it in place correctly.
-"Secret CAM system", huh? Now I'm curious!